Attitude adjusting valve of directional drilling machine

Abstract

An attitude adjusting valve of a directional drilling machine comprises a stabilizing valve set, an oil inlet valve plate, a low-speed propelling valve plate, an oil supply valve plate and a pressure reducing valve plate which are sequentially connected are arranged on one side of the stabilizing valve set, an oil inlet P and an oil return port T are formed in the oil inlet valve plate, and working ports A1 and B1 are formed in the low-speed propelling valve plate; a working port A2 and a working port B2 are formed in the oil supply valve plate; three-position six-way valves and pressure compensation valves are arranged in the low-speed propelling valve plate and the oil supply valve plate respectively, the two three-position six-way valves are connected between an oil inlet P and an oil return opening T in parallel, the pressure compensation valves are connected to the front portions of the corresponding three-position six-way valves respectively, and an opening A and an opening B of each three-position six-way valve are communicated with a pair of corresponding working openings respectively. The control end of each pressure compensation valve is communicated with an LS port of the corresponding three-position six-way valve and is communicated with a feedback port LS through a feedback shuttle valve; and a working port A2 in the oil supply valve plate is communicated with a port P of the stabilizing valve group through an internal oil duct. The valve is convenient to operate, stable in operation and capable of switching the propelling speed and supplying oil to a stable valve group.

Description

TECHNICAL FIELD

[0001] The utility model belongs to a kind of hydraulic valve, in particular to a kind of directional drilling rig posture adjusting valve. BACKGROUND

[0002] Directional drilling rig is a kind of pipeline construction tool in engineering industry, generally more for petroleum, natural gas and some municipal pipeline construction, positioning drilling, reaming, hole cleaning, pipeline back drag and so on are carried out after using large directional drilling rig, then pipeline construction is carried out again.In work, operator needs to operate machine remotely outside directional drilling rig, so it is very important to ensure that directional drilling rig runs stably and sensitively.

[0003] Directional drilling rig needs to adjust the working state of directional drilling rig valve group according to working condition when working, and valve group is required to respond quickly, and the existing directional drilling rig valve group has the following problems:

[0004] 1, stable valve group part has no load sensing system, and the system standby is seriously heated.

[0005] 2, stable valve group part action and drill motor rotation and drill propulsion and other actions lack linkage, and the overall operation is relatively complex.

[0006] 3, stable valve group part lacks linkage between each actuator, and misoperation can cause mechanical component damage. INVENTION CONTENTS

[0007] The utility model wants to solve the technical problem to provide a kind of directional drilling rig posture adjusting valve, which is easy to operate, stable in operation, can switch propulsion speed and supply oil to stable valve group.

[0008] The technical scheme of the utility model is as follows:

[0009] A kind of directional drilling rig posture adjusting valve, including stable valve group, its special feature is: stable valve group side is equipped with the oil inlet valve piece, slow speed propulsion valve piece, oil supply valve piece and pressure reducing valve piece connected in sequence, oil inlet is equipped with oil inlet P and oil return T on oil inlet valve piece, slow speed propulsion valve piece is equipped with working port A1, B1, for the working port A, B of the oil inlet propulsion valve piece of directional drilling rig main valve, the common control fast propulsion part of directional drilling rig feed cylinder is communicated;Oil supply valve piece is equipped with working port A2, B2;

[0010] Three-position six-way valve and pressure compensation valve are respectively arranged in slow speed propulsion valve piece and oil supply valve piece, two three-position six-way valves are connected in parallel between oil inlet P and oil return T, and two pressure compensation valves are respectively connected in front of corresponding three-position six-way valves, the A, B port of two three-position six-way valves is respectively communicated with corresponding working port, and the control end of each pressure compensation valve and the LS port of corresponding three-position six-way valve are communicated with each other and communicated with feedback port LS through feedback shuttle valve and feedback oil channel arranged in each valve piece.

[0011] The working port A2 inside the oil supply valve plate is connected to the P port of the stabilizing valve group through an internal oil passage, and is used to directly supply oil to the stabilizing valve group.

[0012] As a further preferred embodiment, control ports a1 and b1 are provided on the slow-speed advance valve plate, and control ports a2 and b2 are provided on the oil supply valve plate. The three-position six-way valve is a hydraulically controlled manual three-position six-way valve. The control ports at both ends of the three-position six-way valve are respectively connected to the control ports on the corresponding valve plates, and are used to connect an external pilot valve to control the switching of the two three-position six-way valves.

[0013] As a further preferred embodiment, the outlet of the feedback shuttle valve in the slow-speed propulsion valve plate is connected to one end of the inlet of the feedback shuttle valve in the oil supply valve plate, and the outlet of the feedback shuttle valve in the oil supply valve plate is connected to the feedback port LS, which is located on the pressure reducing valve plate.

[0014] As a further preferred embodiment, the pressure reducing valve plate is provided with a pressure reducing valve, an oil supply port X, and an oil return port Y. The oil inlet end of the pressure reducing valve is connected to the oil inlet port P through an internal oil passage, the oil discharge port of the pressure reducing valve is connected to the oil return port Y, and the pressure reducing port of the pressure reducing valve is connected to the oil supply port X, which is used to connect to the pilot valve inlet port for controlling flushing switching.

[0015] As a further preferred embodiment, when the three-position six-way valve is in the middle position, its P port, A port and B port are cut off, and its LS port and T port are connected; when it is in the lower position, its P port and A port are connected and throttled through the LS port, and its B port and T port are connected; when it is in the upper position, its P port and B port are connected and throttled through the LS port, and its A port and T port are connected.

[0016] As a further preferred embodiment, the stabilizing valve assembly includes multiple stabilizing valve plates and a return valve plate connected in sequence. Each stabilizing valve plate forms a manual three-position six-way valve through a valve stem located inside it. When the multiple manual three-position six-way valves are in the neutral position, their P ports are connected in sequence and connected to the return port T1 located on the return valve plate. The P1 port of each manual three-position six-way valve is connected to the working port A2 inside the oil supply valve plate. The P ports and P1 ports of the manual three-position six-way valves near the pressure reducing valve plate are connected to each other. The A and B ports of each manual three-position six-way valve are connected to a pair of working ports located on the corresponding stabilizing valve plate.

[0017] As a further preferred embodiment, there are eight stabilizing valve plates, with a linkage valve plate provided between the seventh and eighth stabilizing valve plates. The working port A9 on the seventh stabilizing valve plate is closed and led out by the linkage valve plate. A linkage shuttle valve and a check valve are provided inside the linkage valve plate. The two ends of the linkage shuttle valve are connected to the working ports A10 and B10 on the eighth stabilizing valve plate respectively through internal oil passages. The output end of the linkage shuttle valve is connected to the working port A9 through the check valve, which is used to automatically open the clamping device of the elevation angle switching cylinder when the elevation angle switching cylinder is activated.

[0018] The utility model discloses the beneficial effect is:

[0019] 1、Because be equipped with three position six ways valves and pressure compensation valve in slow -speed propulsion valve piece and oil supply valve piece respectively, and two pressure compensation valves are connected respectively in the front of corresponding three position six ways valves, through steady valve group combination load sensing system, maintain standby pressure when the system is empty, effectively reduce energy loss, avoid system heating, improve operating efficiency, convenient operation, stable operation, can switch the propulsion speed and give steady valve group oil supply.

[0020] 2、Because be equipped with three position six ways valves and pressure compensation valve in slow -speed propulsion valve piece and oil supply valve piece respectively, two three position six ways valves's A, B mouth are connected with a pair of working mouth on corresponding valve piece respectively, and the working mouth A2 in the oil supply valve piece is communicated with the P mouth of steady valve group through internal oil channel, therefore can make steady valve group action and realize linkage control through slow -speed propulsion valve piece and oil supply valve piece control other action, improve system coordination ability, make whole operation more simple and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the structure schematic diagram of the utility model.

[0022] Figure 2 It is Figure 1 The top view of.

[0023] Figure 3 It is Figure 1 The bottom view of.

[0024] Figure 4 It is Figure 1 The right view of.

[0025] Figure 5 It is the principle diagram of the utility model.

[0026] In the drawing: oil return valve piece 1, linkage valve piece 2, steady valve piece 3, pressure reducing valve piece 4, oil supply valve piece 5, slow -speed propulsion valve piece 6, oil inlet valve piece 7, overflow valve 8, check valve 9, linkage shuttle valve 10, manual three position six ways valve 11, pressure reducing valve 12, pressure compensation valve 13, three position six ways valve 14, feedback shuttle valve 15. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0028] As Figures 1-5 shown, the utility model relates to a directional drilling rig posture valve, including stable valve group, is equipped with the oil inlet valve piece 7, slow -speed propulsion valve piece 6, oil supply valve piece 5 and pressure reducing valve piece 4 that are connected in proper order in stable valve group one side and with stable valve group through bolt solid joint, pressure reducing valve piece 4 is adjacent with stable valve group. In the top surface of oil inlet valve piece 7 is equipped with oil inlet P and oil return T, installs overflow valve 8 in oil inlet valve piece 7, and overflow valve 8 is connected between oil inlet P and oil return T. In the top surface of slow -speed propulsion valve piece 6 is equipped with working port A1, B1, is used for with the working port A, B of directional drilling rig main valve oil inlet propulsion valve piece intercommunication, common control directional drilling rig feed oil cylinder's quick propulsion portion together, is equipped with working port A2, B2 on oil supply valve piece 5, wherein working port A2 is blocked and is communicated with the P port of stable valve group through internal oil channel, is used for directly oil supply for stable valve group.

[0029] slow -speed propulsion valve piece 6 and oil supply valve piece 5 are installed three position six way valves 14, pressure compensation valve 13 and feedback shuttle valve 15 respectively, two three position six way valves 14 are connected in parallel between oil inlet P and oil return T, and two pressure compensation valves 13 are connected in front of corresponding three position six way valves 14 respectively, the A, B port of two three position six way valves 14 is communicated with corresponding pair of working port A1, B1 and A2, B2 respectively, and the control end of each pressure compensation valve 13 and the LS port of corresponding three position six way valve 14 are communicated with each other and are communicated with feedback port LS through the feedback shuttle valve 15 and feedback oil channel arranged in each valve piece, the outlet of feedback shuttle valve 15 in slow -speed propulsion valve piece 6 is communicated with the one end inlet of feedback shuttle valve 15 in oil supply valve piece 5, and the outlet of feedback shuttle valve 15 in oil supply valve piece 5 is communicated with feedback port LS, feedback port LS is arranged on pressure reducing valve piece 4 and is used for connecting the feedback port of variable displacement pump, and the oil circuit of two three position six way valves 14 with greater pressure is fed back to the variable displacement pump.

[0030] When three position six way valve 14 is in the middle position, its P port, A port and B port are cut off, its LS port is communicated with T port, when it is in the lower position, its P port and A port are communicated and throttled with LS port, B port is communicated with T port, when it is in the upper position, its P port and B port are communicated and throttled with LS port, A port is communicated with T port.

[0031] control port a1, b1 are equipped on one side of slow -speed propulsion valve piece 6, control port a2, b2 are equipped on one side of oil supply valve piece 5, three position six way valve 14 is hydraulic control manual three position six way valve, and the control port of two three position six way valves 14 two ends is communicated with corresponding control port a1, b1 and a2, b2 on corresponding valve piece respectively, is used for external pilot valve control two three position six way valves 14's commutation.

[0032] A pressure reducing valve 12, an oil supply port X and an oil return port Y are arranged on the pressure reducing valve plate 4. The oil inlet end of the pressure reducing valve 12 is communicated with the oil inlet port P through an internal oil passage. The oil outlet of the pressure reducing valve 12 is communicated with the oil return port Y. The pressure reducing port of the pressure reducing valve 12 is communicated with the oil supply port X, and is used to connect the pilot valve oil inlet port for controlling the flushing switching.

[0033] The stable valve group comprises a plurality of stable valve plates 3 and an oil return valve plate 1 connected in sequence. The oil return valve plate 1 is away from one end of the pressure reducing valve plate 4. Each stable valve plate 3 forms a manual three-position six-way valve 11 through a valve rod arranged in the interior. When the plurality of manual three-position six-way valves 11 are in the middle position, the P ports are communicated in sequence and with the oil return port T1 arranged on the oil return valve plate 1. The P1 ports of each manual three-position six-way valve 11 are communicated with the working port A2 in the oil supply valve plate 5 through an internal oil passage. The P port and the P1 port of the manual three-position six-way valve 11 close to the pressure reducing valve plate 4 are communicated with each other. The A and B ports of each manual three-position six-way valve 11 are respectively communicated with a pair of working ports A3, B3-A10, B10 arranged on the corresponding stable valve plate 3.

[0034] The working ports A3, B3-A8, B8 are respectively connected with the support leg oil cylinders of the upper and lower stabilizing devices of the directional drilling machine. The working ports A10, B10 are connected with the rising and falling ends of the angle switching oil cylinder of the directional drilling machine. The working port A9 is connected with the opening end of the angle switching oil cylinder clamping device. The working port B9 is connected with the clamping end of the angle switching oil cylinder clamping device.

[0035] When the manual three-position six-way valve 11 is in the middle position, the P port is communicated with the C port and communicated with the P port of the adjacent manual three-position six-way valve 11 through the C port. The A and B ports are communicated with the T port and communicated with the oil return port T1 through the T port. The P1 port is cut off. When the manual three-position six-way valve 11 is in the upper position, the A port is communicated with the T port, the B port is communicated with the P1 port, and the P port is cut off with the C port. When the manual three-position six-way valve 11 is in the lower position, the B port is communicated with the T port, the A port is communicated with the P1 port, and the P port is cut off with the C port.

[0036] In the embodiment, the stable valve plate 3 is eight. A linkage valve plate 2 is connected between the seventh stable valve plate and the eighth stable valve plate. The working port A9 on the seventh stable valve plate is closed and a working port is led out by the linkage valve plate 2. A linkage shuttle valve 10 and a one-way valve 9 are installed in the linkage valve plate 2. The two ends of the linkage shuttle valve 10 are communicated with the working ports A10 and B10 on the eighth stable valve plate through internal oil passages. The output end of the linkage shuttle valve 10 is communicated with the working port A9 through the one-way valve 9, so as to automatically open the angle switching oil cylinder clamping device when the angle switching oil cylinder is in action.

[0037] In working, the oil inlet P is connected with a reserved interface of a variable pump, the oil return ports T and T1 are connected with an oil tank respectively, the working ports A1 and B1 are communicated with the working ports A and B of the oil inlet push valve piece of the directional drilling machine main valve through connecting oil pipes to jointly control the fast push action of the feed cylinder of the directional drilling machine, the working port B2 supplies oil to other valve bodies through connecting oil pipes, the oil supply port X is communicated with the pilot valve oil inlet of the directional drilling machine valve group to supply oil to the pilot valve of the directional drilling machine valve group, and the working ports A3, B3-A8 and B8 of the stabilizing valve group control the support action of the directional drilling machine.

[0038] In the initial state, each three-position six-way valve 14 is located in the middle position, and the pressure compensation valve 13 is located in the upper position, at this time, the oil entering from the oil inlet P is communicated with the oil return port T through the overflow valve 8, the oil unloading when the valve is in the middle position can be realized, and the overpressure heating and damage of the valve body caused by the excessive system pressure in the valve piece in the middle position can be avoided. The oil entering from the oil inlet P reaches the oil supply port X through the pressure reducing valve, the oil supply to the connected pilot valve for controlling the valve body switching can be realized, and the damage of the valve body caused by the excessive pressure of the pilot valve can be avoided.

[0039] 1. When the fast push operation is needed, the handle of the pilot valve connected with the control ports a1, b1 and a2, b2 is switched to the fast push state, at this time, the control port a0 of the directional drilling machine main valve is communicated with oil, the control ports a1 and b1 of the posture adjusting valve are not communicated with oil, at this time, the slow push valve piece 6 is in the middle position, and each oil port is in the cut-off state, the posture adjusting valve does not participate in the fast push operation.

[0040] 2、When slow pushing operation is needed, the pilot valve handle is switched to slow pushing state, at this time, the oil ports of the fast pushing valve disc of the main valve of the directional drilling rig are in the disconnected state, the working ports A, B of the oil feeding pushing valve disc of the main valve of the directional drilling rig are connected with the working ports A1, B1 of the slow pushing valve disc 6 of the posture adjusting valve, and the feeding oil cylinder is fed through the slow pushing valve disc 6; at this time, the oil from the control port a1 is fed through the pilot valve handle to push the valve core in the slow pushing valve disc 6 to act, so that the three-position six-way valve formed in the slow pushing valve disc 6 is in the lower position, at this time, the oil from the oil inlet P enters the pressure compensation valve 13, so that the pressure compensation valve 13 is reversed and stabilized in the middle position, the oil enters the working port A1 through the pressure compensation valve 13 and the three-position six-way valve in the slow pushing valve disc 6, and then enters the feeding oil cylinder through the working port A of the main valve of the directional drilling rig, the oil in the feeding oil cylinder flows back to the oil tank through the posture adjusting valve from the oil return port T, at this time, the oil cylinder is in the slow pushing state; the oil from the control port b1 is fed through the pilot valve handle to push the valve core in the slow pushing valve disc 6 to act, so that the three-position six-way valve formed in the slow pushing valve disc 6 is in the upper position, at this time, the oil from the oil inlet P enters the pressure compensation valve 13, so that the pressure compensation valve 13 is reversed and stabilized in the middle position, the oil enters the corresponding working port B1 of the slow pushing valve disc 6 through the pressure compensation valve 13, and then enters the feeding oil cylinder through the working port B of the main valve of the directional drilling rig, the oil in the feeding oil cylinder flows back to the oil tank through the posture adjusting valve from the oil return port T, at this time, the oil cylinder is in the slow retreating state.

[0041] 3、When oil is needed to be supplied to other valve discs, the oil from the control port a2 is fed through the pilot valve handle to push the valve core in the oil feeding valve disc 5 to act, so that the three-position six-way valve formed in the oil feeding valve disc 5 is in the lower position, at this time, the oil from the oil inlet P enters the pressure compensation valve 13, so that the pressure compensation valve 13 is reversed and stabilized in the middle position, the oil enters the working port A2 through the pressure compensation valve 13 and the three-position six-way valve formed in the oil feeding valve disc 5, and then supplies oil to the stabilizing valve group 9 through the oil circuit connected inside the working port A2, the oil in the working port B2 flows out from the oil return port T, at this time, the valve body is in the state of supplying oil to the stabilizing valve group; if the oil from the control port b2 is fed through the pilot valve handle to push the valve core in the oil feeding valve disc 5 to act, so that the three-position six-way valve formed in the oil feeding valve disc 5 is in the upper position, at this time, the oil from the oil inlet P enters the pressure compensation valve 13, so that the pressure compensation valve 13 is reversed and stabilized in the middle position, the oil enters the working port B2 through the pressure compensation valve 13 and the three-position six-way valve formed in the oil feeding valve disc 5, and then supplies oil to other valve bodies through the connecting oil pipe of the working port B2, at this time, the oil in the stabilizing valve group flows out from the oil return port T through the oil circuit of the working port A2, at this time, the valve body is in the state of supplying oil to other valve bodies.

[0042] 4. When the steady operation, the steady valve group 9 uses the single oil return port T1 to return oil, the oil enters into the steady valve group 9 from the working port A2 in the oil supply valve piece 5 through the internal oil channel, and the remaining part is the same as the principle of the general steady valve group, which is not described here.

[0043] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and can be applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein.

Claims

1. A directional driller attitude valve comprising a robust valve set, characterized by: The steady valve group is provided with an oil inlet valve, a slow propulsion valve, an oil supply valve and a pressure reducing valve connected in sequence on one side, the oil inlet valve is provided with an oil inlet port P and an oil return port T, the slow propulsion valve is provided with working ports A1 and B1 for communicating with working ports A and B of the oil inlet propulsion valve of the main valve of the directional drilling machine to jointly control the fast propulsion part of the oil feeding cylinder of the directional drilling machine, and the oil supply valve is provided with working ports A2 and B2. The slow propulsion valve and the oil supply valve are respectively provided with a three-position six-way valve and a pressure compensation valve, the two three-position six-way valves are connected in parallel between the oil inlet port P and the oil return port T, the two pressure compensation valves are connected in front of the corresponding three-position six-way valves, the A and B ports of the two three-position six-way valves respectively communicate with a corresponding pair of working ports, and one control end of each pressure compensation valve and the LS port of the corresponding three-position six-way valve are in communication with each other and communicate with the feedback port LS through the feedback spool valve and the feedback oil channel arranged in each valve. The working port A2 in the oil supply valve is in communication with the P port of the steady valve group through an internal oil channel, and is used for directly supplying oil to the steady valve group.

2. The directional drilling rig attitude valve of claim 1, wherein the valve body is a cylindrical shape. The slow propulsion valve is provided with control ports a1 and b1, and the oil supply valve is provided with control ports a2 and b2, the three-position six-way valve is a hydraulic control manual three-position six-way valve, the control ports at both ends of the three-position six-way valve are in communication with the control ports on the corresponding valve, and are used for externally connecting a pilot valve to control the switching of the two three-position six-way valves.

3. A directional drilling rig attitude valve according to claim 1 or 2, characterised in that: The outlet of the feedback spool valve in the slow propulsion valve is in communication with one end of the feedback spool valve in the oil supply valve, the outlet of the feedback spool valve in the oil supply valve is in communication with the feedback port LS, and the feedback port LS is arranged on the pressure reducing valve.

4. The directional drilling rig attitude valve of claim 3, wherein the valve body is a cylindrical shape. The pressure reducing valve, an oil supply port X and an oil return port Y are arranged on the pressure reducing valve, the oil inlet end of the pressure reducing valve is in communication with the oil inlet port P through an internal oil channel, the oil discharge port of the pressure reducing valve is in communication with the oil return port Y, the pressure reducing port of the pressure reducing valve is in communication with the oil supply port X, and is used for connecting the oil inlet port of the pilot valve for controlling the flushing switching.

5. The directional drilling rig attitude valve of claim 1 or 2, wherein: When the three-position six-way valve is in the middle position, the P port, the A port and the B port are cut off, and the LS port is in communication with the T port; when the three-position six-way valve is in the lower position, the P port and the A port are in communication and throttled with the LS port, and the B port is in communication with the T port; when the three-position six-way valve is in the upper position, the P port and the B port are in communication and throttled with the LS port, and the A port is in communication with the T port.

6. The directional drilling rig attitude valve of claim 1, wherein: The steady valve group comprises a plurality of steady valve plates and an oil return valve plate connected in sequence, each steady valve plate forms a manual three-position six-way valve through a valve rod arranged in the steady valve plate, the P ports of the plurality of manual three-position six-way valves are in communication in sequence and with the oil return port T1 arranged on the oil return valve plate when the plurality of manual three-position six-way valves are in the middle position, the P1 ports of each manual three-position six-way valve are in communication with the working port A2 in the oil supply valve, and the P port and the P1 port of the manual three-position six-way valve close to the pressure reducing valve plate are in communication with each other, and the A and B ports of each manual three-position six-way valve are respectively in communication with a pair of working ports arranged on the corresponding steady valve plate.

7. A directional drilling rig attitude valve according to claim 6, characterised in that: The eight steady valve plates are provided with linkage valve plate between the seventh steady valve plate and the eighth steady valve plate, the working port A9 on the seventh steady valve plate is closed and led out by the linkage valve plate, the linkage shuttle valve and the one-way valve are arranged in the linkage valve plate, two ends of the linkage shuttle valve are communicated with the working ports A10 and B10 on the eighth steady valve plate through internal oil channels respectively, the output end of the linkage shuttle valve is communicated with the working port A9 through the one-way valve, and the elevation angle switching oil cylinder clamping device is automatically opened when the elevation angle switching oil cylinder is in action.

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